Configure Global Multicast Parameters

Configure global multicast parameters for a branch ION device.

Configure global multicast parameters on your branch ION device after you enable multicast for a Layer 3 LAN interface on a branch ION device.

Select

Workflows

Devices

Claimed Devices

Configure the device

Routing

Multicast

Global Configuration

.

You can view the

Multicast

tab only after you enable multicast for a Layer 3 LAN interface.

Select

SPT Switchover

to enable Shortest Path Tree (SPT) switchover.

SPT Switchover

is enabled by default. This indicates that once the first multicast packet is received, that is, when the receiver receives the source address, the Designated Router (DR) at the receiver’s end and the Rendezvous Point (RP) choose the optimal path to relay information from the source to the receiver.

It is a good practice to always enable SPT.

You can edit the global multicast parameters only for devices running software versions 6.0.1 or later.

ION devices running software versions lower than 6.0.1



ION devices running software versions 6.0.1 or higher



The descriptions for the global multicast parameters are based on the PIM-SM specification outlined in RFC 4601 (https://datatracker.ietf.org/doc/html/rfc4601).

The multicast parameters are read-only for devices running versions lower than 6.0.1.

Field	Description	Default Value
SPT Switchover	Select to enable shortest path tree (SPT) switchover. This indicates that once the first multicast packet is received i.e. the source address is received by the receiver, the DR at the receiver’s end and the RP choose the optimal path to relay information from the source to the receiver.	Enabled
Enable BSM	Select to enable receiving and forwarding of BSM on multicast enabled interfaces. BSM is a protocol by which the device learns RPs dynamically. Available only for ION devices running software versions 6.0.1 or later.
DR Priority	Indicates the probability of a PIM interface being elected as a Designated Router (DR). For Static RP, the DR Priority advertised in a PIM Hello is 1.	1
PIM Hello Interval	Indicates the time interval between two PIM Hello packets.	30 s
PIM Hello Hold Time	Indicates the time interval for which a neighbor should wait for a Hello message from a sender neighbor before pruning the neighbor.	105 s
PIM Join/Prune Interval	Indicates the time interval between two Join/Prune messages sent to a neighbor.	60 s
PIM Join/Hold Interval	Indicates the time interval for which a receiver should wait for the next Join/Prune message from the neighbor before pruning the neighbor.	210 s
PIM Triggered Hello Delay	Indicates the value of the Hello timer for delay between triggered Hello messages. Available only for ION devices running software versions earlier than 6.0.1.	4 s
PIM TTL Threshold	Packets with a lower TTL than the PIM TTL Threshold are discarded. Available only for ION devices running software versions earlier than 6.0.1.	1
PIM SPT Threshold	Indicates the cut-over time from Rendezvous Point Tree (RPT) to SPT. Available only for ION devices running software versions earlier than 6.0.1.	100 s
IGMP Query Interval	Indicates the time interval between successive IGMP queries.	125 s
IGMP Query Response Interval	Indicates the maximum response time advertised in the IGMP query.	10 s
IGMP Last Member Query Count	Indicates the number of times the ION device sent IGMP queries to the last known active host on the subnet.	3
IGMP Last Member Query Response Interval	Indicates the time interval for the ION device to respond to the IGMP query from the last known active host on the subnet.	1 s
IGMP Querier Timeout	Indicates the timeout interval to wait before becoming a Querier. Available only for ION devices running software versions earlier than 6.0.1.	380 s
IGMP Query Max Response Time	Indicates the maximum response time to the IGMP query. Available only for ION devices running software versions 6.0.1 or later.	100 s
Multicast Site Profile	Displays the multicast site profile associated with the branch site. (Optional) Click Edit in Site Summary Configuration to change the associated multicast site profile.

Configure global multicast parameters for a data center ION device.

Configure global multicast parameters on your data center ION device after you enable multicast for a WAN interface on a data center ION device. You can configure multicast for data center ION devices running softwares versions 6.0.1 or later only.

Select

Workflows

Devices

Claimed Devices

Configure the device

Routing

Multicast

Global Configuration

.



Field	Description	Default Value
SPT Switchover	Select to enable shortest path tree (SPT) switchover. This indicates that once the first multicast packet is received i.e. the source address is received by the receiver, the DR at the receiver’s end and the RP choose the optimal path to relay information from the source to the receiver.	Enabled
Enable BSM	Select to enable receiving and forwarding of BSM on multicast enabled interfaces. BSM is a protocol by which the device learns RPs dynamically.
DR Priority	Indicates the probability of a PIM interface being elected as a Designated Router (DR). For Static RP, the DR Priority advertised in a PIM Hello is 1.	1
PIM Hello Interval	Indicates the time interval between two PIM Hello packets.	30 s
PIM Hello Hold Time	Indicates the time interval for which a neighbor should wait for a Hello message from a sender neighbor before pruning the neighbor.	105 s
PIM Join/Prune Interval	Indicates the time interval between two Join/Prune messages sent to a neighbor.	60 s
WAN multicast peer group profiles	Displays the multicast site profiles created with the data center site as the multicast source. (Optional) Click View in Site Summary Configuration to change the associated multicast site profile.